I think that master-P's account never changed ownership.
His password was changed four times:
2016-01-05 11:37:58
2015-12-17 13:55:10
2015-05-25 15:26:43
2014-10-19 04:07:48
No resets. All of the above changes were done by IPs which geolocate to the same general area. Also, his very first post and his very last post geolocate to the same general area. And for the last several months he's been using mainly the same IP.
Based on IP evidence, these users are
possible (
not certain) alts of master-p:
REAL-master-p
jeffersonairplane
kooke
MrBig
sifter
iflewtoday32
antonioserrano72
newflesh
AccTraderALT
ShameOnYou
berserkerbarrage
malaimult
protocol332
komodovpn
#yolo
IronMarvel
djshshajtm
Use this list as a starting point to see if you can find other links between them. Do not use my list as absolute proof. It is very common for two users to use the same IP at one point or another; 364 users have used the same IP as master-p, and the vast majority of them are not the same person.
Changing e-mail addresses on bitcointalk can only be done by verification of old address
Not true